:root {
    --primary-color: #4361ee;
    --secondary-color: #3a0ca3;
    --accent-color: #4cc9f0;
    --text-color: #2b2d42;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
}

.nav-menu li {
    margin-left: 30px;
}

.nav-menu a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
}

.nav-menu a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    bottom: -5px;
    left: 0;
    transition: var(--transition);
}

.nav-menu a:hover:after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 150px 0 100px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--accent-color);
    color: white;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition);
}

.btn:hover {
    background-color: white;
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* About Section */
.about {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h3 {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-title p {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
    color: #6c757d;
}

.about-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.about-text {
    flex: 1;
    padding: 20px;
    min-width: 300px;
}

.about-text h4 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.about-text p {
    margin-bottom: 20px;
}

.about-img {
    flex: 1;
    padding: 20px;
    min-width: 300px;
}

.about-img img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Services Section */
.services {
    background-color: #f8f9fa;
    padding: 100px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.service-card h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

/* Apps Section */
.apps {
    padding: 100px 0;
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.app-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    cursor: pointer;
}

.app-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.app-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: var(--transition);
}

.app-card:hover .app-img {
    opacity: 0.8;
}

.app-content {
    padding: 25px;
}

.app-content h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.app-content p {
    margin-bottom: 20px;
}

.app-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.app-detail-btn.disabled{
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
  background-color: #ccc;
  color: #666;
  border-color: #999;
}

.app-links a {
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 600;
}

.app-detail-btn {
    padding: 8px 15px;
    background-color: var(--primary-color);
    color: white !important;
    border-radius: 5px;
    transition: var(--transition);
}

.app-detail-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

.app-card-link {
    display: block;
    cursor: pointer;
}

/* Contact Section */
.contact {
    background-color: #f8f9fa;
    padding: 100px 0;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background-color: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid #ced4da;
    border-radius: 5px;
    font-size: 1rem;
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.btn-submit {
    background-color: var(--primary-color);
    border: none;
    color: white;
    cursor: pointer;
    width: 100%;
}

/* Footer */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-column {
    flex: 1;
    min-width: 250px;
    margin-bottom: 30px;
    padding: 0 15px;
}

.footer-column h5 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h5:after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background-color: var(--accent-color);
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    color: #adb5bd;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: white;
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary-color);
    transform: translateY(-5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Proje Detay Sayfası */
.project-detail {
  padding: 100px 0;
}
.project-detail .section-title h3 {
  font-size: 2.2rem;
  color: var(--primary-color);
  margin-bottom: 10px;
}
.project-detail .section-title p {
  font-size: 1rem;
  color: #6c757d;
  margin-bottom: 30px;
}
.project-meta {
  font-size: 0.9rem;
  color: #6c757d;
  margin-bottom: 30px;
  display: flex;
  gap: 20px;
}
.project-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}
.project-gallery img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
.project-description,
.project-features,
.project-tech {
  margin-bottom: 40px;
}
.project-features ul,
.project-tech ul {
  list-style: disc inside;
  padding-left: 0;
}
.tech-list li {
  display: inline-block;
  background-color: var(--accent-color);
  color: white;
  padding: 5px 10px;
  border-radius: 5px;
  margin: 5px 5px 0 0;
  font-size: 0.9rem;
}
.project-links .btn {
  margin-right: 10px;
}


/* Responsive */
@media (max-width: 992px) {
    .about-content {
        flex-direction: column;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: var(--transition);
        box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 15px 0;
    }
    
    .hamburger {
        display: block;
    }
}

@media (max-width: 768px) {
    .hero h2 {
        font-size: 2.5rem;
    }
}